Steering-gear for tractors



L. W. WITRY;

STEERING GEAR FOR TRACTORS.

APPLICATION FILED JUL! 23.1911.

1 3 1 334 PatentedJune 14, 1921.

Fig. 1.

N -Fz'g a wz'tnessz fl jaw/enter,

,, r I Wz'zry, by

LOUIS W. WITRY, OF WATERLOO, IOVIA, ASSIGNOBJ TO WA COMPANY, OFVVATERLOO, IOW'A STEERING-GEAR FOR TRACTORS.

Application filed July 23, 1917.

To aZZ whom it may concern:

Be it known that I, LOUIS ll". VITRY, a citizen of the United States ofAmerica, and a resident of Waterloo, Blackhawk county, Iowa, haveinvented certain new and useful Improvements in Steering-Gears forTractors, of which the following is a specification.

My invent-ion relates to improvements in steering-gear for vehicles, andthe object of my improvement is to furnish of such gear, a drum formedin the shape of a worm, whose threadis modified in such a way that itwill keep the steering chains or cables taut while being wound orunwound thereon in the action of steering the vehicle.

This object I have accomplished by the means which are hereinafterdescribed and claimed, and which are illustrated in the accompanyingdrawings, in which- Figure 1 is a plan view of the chassis andrunning-gear of a tractor with my improved steering gear mountedthereon, and showing other parts removed.

Fig. 2 is an enlarged detail plan view of. the winding drum of saidsteering-gear.

Similar numerals of reference denote corresponding parts throughout theseveral views.

Referring first to Fig. 1. the numeral 1 denotes the chassis of atractor mounted on traction wheels 2 and steering wheels the latterconnected by means of a medially pivoted axle d. A transverse rotaryshaft 11 is mounted in said chassis and upon said shaft issecured-medially a winding drum 9 having thereon the channel thread 21.A double hook 10 is fixed on the middle of said drum and adjacent endsof the steering chains 7 and 8 are secured to their respective hooks sothat the chains may be carried in the channel of said thread reverselyto have their forward ends carried to the tent divergingly and securedto bolts 23 and 2% respectively passed through orificed lugs 6 onopposite ends of said axle 4, springs 5 being seated between adjustednuts on said bolts and said lugs thus aliording a resilient connectionbetween each chain and said axle.

A worm wheel 12 is mounted upon the shaft 11, and is in mesh with a worm14L as a part.

Specification of Letters Patent.

Serial No. 1

on a worm-shaft section 1 ction 15 is TERLOO GASOLINE ENGINE PatentedJune 14, 1921.

5, the latter rotaed bearings 13 on The end of the conne versal joint 16w worm-shaft cted by means of a uniith a shaft section 17, the

latter adapted to work in a bearing 20 supported on said wheel 18 on etractor.

Referring now to Fig. 2, it wi chassis, and having a hand its rear endnear the seat 19 of ll be seen at the worm thread 21 is of less diameterkeep the chain taut. and this a of claim as new.

of the which is the parts of Having described my i tors Patent, is:

drum, said thread pitch from its nndd nositely on said tch casing indiameter ward its ends. and steer connected between opp and saidsecuring gradu drum in tl i 2. T e combination with the O ward its ends,and flexible and toe middle or" the drum ction is due to the diameterand pitch of the outer central portion 22 and 25 site outer parts. Theoh 0 cause the drum 9, when chains 7 or 8, to being wound up theincrease widening of the the worm thread. nvention, what I and desire tosecure by Letthe pivoted steera winding-drum eled worm-thread thereon,

part of said ally widening in lo toward its ends, also from its middletoing chains or cables osite ends of said axle means so as to wind opiechannel of said pivoted steer vehicle, of a winding-drum a singlechanneled worm-thread wh reon, said thread gradua from its middle towincreasing in dia lly widening in ard its ends, also meter from itsmiddle toconnecting bodies nnected between opposite ends of said axle soas to wind oppositel on said drum in the channel of 1d thread. Signed atV Aug. 1916.

lVitnesses PEARL M.

aterloo, Io

wa, this 5th day STANTON, NNEDY.

